diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.create/20_synthetic_source.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.create/20_synthetic_source.yml
index fc0bfa144bbc4..edb684168278b 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.create/20_synthetic_source.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.create/20_synthetic_source.yml
@@ -2049,5 +2049,6 @@ create index with use_synthetic_source:
       indices.disk_usage:
         index: test
         run_expensive_tasks: true
-  - gt: { test.fields.field.total_in_bytes: 0 }
-  - is_false: test.fields.field._recovery_source
+        flush: false
+  - gt: { test.store_size_in_bytes: 0 }
+  - is_false: test.fields._recovery_source